JP2004107838A - Frame of loom, and method for changing beating method in loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a beating structure to be changed to a different beating structure. <P>SOLUTION: The frame 10 of a loom has a first hole for a bearing for receiving a driving shaft, and a second hole for the bearing for receiving a rocking shaft, and enables a cam-type beating structure 22 and a crank-type beating structure 24 to be selectively installed. The cam-type beating structure 22 has the driving shaft having a cam shaft 46 with cams 42 and 44, and the rocking shaft having a first output shaft 52 with cam levers 48 and 50 meshing with the cams 42 and 44. The crank-type beating structure 24 has the driving shaft having a crank shaft 90, a rocking shaft having a second output shaft 92, and two or more links 94, 96 and 98 linking the crank shaft 90 and the second output shaft 92. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a loom frame to which a crank type beating mechanism and a cam type beating mechanism can be selectively mounted.
[0002]
[Prior art]
Generally, a loom is provided with a dedicated beating mechanism for each loom, and a frame supports a driving shaft and a locking shaft of the beating mechanism. As such a beating mechanism, a cam-type beating mechanism in which a locking shaft is driven by a cam mechanism (see Patent Document 1), a crank-type beating mechanism in which a locking shaft is driven by a crank mechanism (see Patent Document 2), and the like. There is. Since the cam type beating mechanism can increase the dwell angle, the weft insertion property is excellent, and the crank type beating mechanism has a simple structure, so that the loom can be rotated at high speed.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. Hei 1-306651 [Patent Document 2]
JP-A-58-191247
[Problem to be solved]
However, in such a loom, when changing the beating method (beating mechanism) (for example, changing from a cam type beating mechanism to a crank type beating mechanism, or changing from a crank type beating mechanism to a cam type beating mechanism). Or change to a loom having the intended beating mechanism.
[0005]
For this reason, in a conventional loom, a plurality of types of looms having different beating mechanisms must be installed in a weaving factory, and a large space for installing these is required. Also, in the loom maker, the frame must be manufactured for each type of beating mechanism, which increases the manufacturing cost of the frame.
[0006]
An object of the present invention is to make it possible to easily change a beating mechanism.
[0007]
[Solutions, actions, and effects]
A frame according to the present invention includes a first bearing hole for receiving a drive shaft and a second bearing hole for receiving a locking shaft, and selectively mounts a cam type beating mechanism and a crank type beating mechanism. It is possible.
[0008]
The cam type beating mechanism includes a drive shaft having a cam shaft having a cam, and a locking shaft having a first output shaft having a cam lever which engages with the cam.
[0009]
The crank type beating mechanism includes a drive shaft having a crankshaft, a locking shaft having a second output shaft, and a plurality of links connecting the crankshaft and the second output shaft.
[0010]
According to this frame, the drive shaft provided with the camshaft of the cam type beating mechanism and the drive shaft provided with the crankshaft of the crank type beating mechanism are selectively received in the first bearing hole via the bearing. And the locking shaft provided with the first output shaft and the locking shaft provided with the second output shaft can be selectively received in the second bearing hole via the bearing. The mechanism and the crank type beating mechanism can be selectively mounted. Therefore, when changing the beating mechanism, a desired type of beating mechanism can be selectively mounted on the same frame.
[0011]
The cam-type beating mechanism and the crank-type beating mechanism make the positions of the axes of the drive shaft including the camshaft and the drive shaft including the crankshaft identical to each other in a state applied to the loom. The positions of the axes of the locking shaft having the output shaft and the locking shaft having the second output shaft can be the same. In this case, the positional relationship between the axis of the drive shaft (cam shaft) of the cam type beating mechanism and the axis of the locking shaft (first output shaft) is determined by the relationship between the axis of the drive shaft (crank shaft) of the crank type beating mechanism. The positional relationship with the axis of the locking shaft (second output shaft) is the same. Thereby, the cam type beating mechanism and the crank type beating mechanism can be easily and selectively mounted on the same frame.
[0012]
A beating method switching method according to the present invention includes a camshaft having a cam for a frame of a loom including a first bearing hole for receiving a drive shaft and a second bearing hole for receiving a locking shaft. A cam-type beating mechanism including a drive shaft, a locking shaft having a first output shaft having a cam lever engaged with the cam, a drive shaft having a crankshaft, and a locking having a second output shaft. The beating method is switched by selectively mounting a crank type beating mechanism including a shaft and a plurality of links connecting the crankshaft and the second output shaft.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
The loom has a pair of left and right frames. Referring to FIGS. 1 to 4, each frame includes a first bearing hole 14 and a second bearing hole 18.
[0014]
The first bearing hole 14 receives the drive shaft of the beating mechanism 22 when the cam type beating mechanism 22 is mounted, and receives the driving shaft of the beating mechanism 24 when the crank type beating mechanism 24 is mounted. . The second bearing hole 18 receives the rocking shaft of the beating mechanism 22 when the cam type beating mechanism 22 is mounted, and receives the locking shaft of the beating mechanism 24 when the crank type beating mechanism 24 is mounted. . Each of the beating mechanisms 22 and 24 includes a motion conversion device, and converts the one-way rotational motion of the drive shaft into a reciprocating rotary motion (rocking motion) of the locking shaft by the motion converter.
[0015]
In the embodiment, the drive shaft includes the drive-side camshaft 46 or the crankshaft 90, the driven-side connection shaft 12, and the coupling 56. The camshaft 46 or the crankshaft 90 is connected to the driven connection shaft 12 via a coupling 56.
[0016]
The locking shaft is formed by the drive-side cam output shaft (first output shaft) 52 or the crank output shaft (second output shaft) 92, the driven-side connection shaft 16, and the coupling 56. The output shaft 52 or 92 is connected via a coupling 56 to the connection shaft 16 on the driven side.
[0017]
The frame 10 on the right side of the loom is provided with a mounting surface 20 in which a screw hole 28 is opened. The mounting surface 20 includes a frame cover 40 including one shaft end of the drive-side shaft 46 or 90 and bearing holes 60 and 72 for supporting one shaft end of the drive-side shaft 52 or 92, respectively. It is attached via a bolt 26.
[0018]
FIGS. 1 and 2 show the motion converting device of the cam type beating mechanism 22 mounted on the right frame 10 of the loom. FIGS. 3 and 4 show the motion converting device of the crank type beating mechanism 24 mounted on the right frame 10 of the loom. FIGS. 1 and 3 are assembled right side views of the loom with the frame cover 40 (see FIG. 2) removed from the frame 10 of the loom. 2 and 4 are cross-sectional views of the motion conversion device from above the loom of FIGS. 1 and 3, and, for the sake of explanation, the connecting shaft 16 is shown at a position shifted to the left relative to the connecting shaft 12 with respect to the connecting shaft 12. ing.
[0019]
The frame cover 40 may be shared by the cam-type beating mechanism 22 and the crank-type beating mechanism 24, or the cam-type beating mechanism 22 and the crank-type beating mechanism 24 may be separately provided with a dedicated frame cover 40. May be used.
[0020]
As shown in FIG. 1, the frame 10 supports the connecting shaft 16, and a reed 30 is attached to the connecting shaft 16 at the tip of a sleet (that is, a swing arm) 32 that is non-rotatably mounted to the connecting shaft 16. Are removably assembled via a lead holder 34.
[0021]
In the illustrated example, the present invention is applied to a frame of an air jet loom. For this reason, a plurality of sub-nozzles 36 for weft insertion are detachably assembled to the lead holder 34 via the nozzle holder 38. The reed 30 and the sub-nozzle 36 are oscillated by the angular reciprocation of the connecting shaft 16 (reciprocating rotation), whereby the sley 32 is reciprocally rotated.
[0022]
As shown in FIG. 2, the cam type beating mechanism 22 has cams 42 and 44 and forms a drive shaft on the drive side, and is connected to the cam shaft 46 to form a drive shaft on the driven side. A connecting shaft 12, a cam output shaft 52 having a pair of cam levers 48 and 50 respectively supporting cam followers 64 and 66 engaged with the cams 42 and 44, and forming a driving-side locking shaft; And a connecting shaft 16 connected to the shaft 52 and forming a driven-side locking shaft.
[0023]
The camshaft 46 is inserted into the bearing hole 14 of the frame 10 so as to be relatively non-rotatably connectable to the connection shaft 12, and the cam output shaft 52 is inserted and connected to the bearing hole 18 of the frame 10. The shaft 16 can be connected to the shaft 16 so as not to rotate relatively. The cam shaft 46 and the connecting shaft 12 constitute a drive shaft, and the cam output shaft 52 and the connecting shaft 16 constitute a locking shaft.
[0024]
The cams 42 and 44 have an irregular elliptical plate cam shape, and are attached to the cam shaft 46 so as to be spaced apart in the axial direction of the cam shaft 46.
[0025]
The camshaft 46 is assembled to the frame 10 by fitting one end of the camshaft 46 to a bearing 54 arranged in the bearing hole 14 of the frame 10. One end of the camshaft 46 inserted into the bearing 54 of the frame 10 can be relatively non-rotatably and separably assembled to the connection shaft 12 by the coupling 56.
[0026]
The other end of the camshaft 46 is fitted to a bearing 58 provided on the frame cover 40 and protrudes outside the frame cover 40 from a bearing hole 60 in which the bearing 58 is disposed. A driving pulley 62 is attached to the other end of the cam shaft 46 so as to be relatively non-rotatable and detachable.
[0027]
The cam levers 48 and 50 are connected to the cam output shaft 52 so as not to rotate relatively. The cam levers 48 and 50 correspond to the cams 42 and 44, respectively, and are spaced apart in the axial direction of the cam output shaft 52.
[0028]
The cam levers 48 and 50 are also respectively oriented in the direction of the axis of the cam output shaft 52 so that the cam followers 64 and 66 having a disc shape are brought into contact with the cam surfaces of the corresponding cams 42 and 44 by the pivot pins 68. It is rotatably assembled at intervals.
[0029]
The cam output shaft 52 is assembled to the frame 10 by fitting one end of the cam output shaft 52 to a bearing 70 arranged in the bearing hole 18 of the frame 10. One end of the cam output shaft 52 fitted to the bearing 70 of the frame 10 is assembled to the connecting shaft 16 so as to be relatively non-rotatable and separable by a coupling 56 different from the coupling 56 between the drive shafts. Can be.
[0030]
The other end of the cam output shaft 52 is fitted to a bearing 74 disposed in a bearing hole 72 of the frame cover 40.
[0031]
The frame cover 40 has the shape of a casing in which a central region is formed as a concave portion 76, and includes an outward flange portion 78 on a part of the outer periphery thereof. The recess 76 has a size that can accommodate the motion conversion device of the cam-type beating mechanism 22 and a crank-type beating mechanism 24 (see FIG. 4) described later. The bearing holes 60 and 72 are formed at the bottom of the recess 76.
[0032]
The flange portion 78 of the frame cover 40 has a plurality of through holes through which the bolts 26 for detachably assembling the frame cover 40 to the mounting surface 20 on the side surface of the frame 10 are passed. The frame cover 40 can be securely attached to the frame 10 detachably by the plurality of bolts 26.
[0033]
The bearing holes 14 and 18 on the frame 10 and the bearing hole 60 on the frame cover 40 are sealed with a seal member 80 so as to allow an oil bath.
[0034]
When the camshaft 46 is rotated about its axis, the cams 42 and 44 are rotated and the cam levers 48 and 50 are actuated by the cam followers 64 and 66, respectively, such that the cam followers 64 and 66 are in constant contact with the cam surfaces of the cams 42 and 44, respectively. It is mounted on the output shaft 52.
[0035]
When the cams 42 and 44 are rotated, the cam followers 64 and 66 rotate following the cam surfaces of the cams 42 and 44, and the cam levers 48 and 50 perform an angular reciprocating rotation, thereby causing the cam output shaft 52 to rotate. Rock around the axis. Due to the swinging motion of the cam output shaft 52, the reed 30 is swung to perform a beating motion.
[0036]
In the above-described embodiment, the positive cam is used as the positive cam which rotates the cam output shaft 52 reciprocally angularly using two sets of cam levers, cams and cam followers. Is also good. In that case, the cam follower is displaced against the spring force.
[0037]
As shown in FIGS. 3 and 4, the crank type beating mechanism 24 that can be assembled to the frame 10 includes a crankshaft 90 having a link 94 and a crankpin 100 and forming a drive shaft on the drive side, and a coupling 56. The coupling shaft 12 is connected to the crankshaft 90 via a shaft to form a driven shaft on the driven side, the output shaft 92 for the crank forming a locking shaft on the driving side, and the output shaft 92 for the crank via the coupling 56. It includes a connecting shaft 16 connected to form a locking shaft on the driven side, and links 96 and 98 connecting the link 94 and the crank output shaft 92. The frame cover 40 is the same as the frame cover shown in FIGS.
[0038]
The crankshaft 90 and the output shaft 92 have the same bearing diameter and overall length as the camshaft 46 and the cam output shaft 52 shown in FIG. 2, respectively. The position dimensions X1, X2, Y1 and Y2 of the bearing holes 14 and 18 of the crankshaft 90 and the output shaft 92 from the reference plane of the frame 10 shown in FIG. Dimensions X1, X2, Y1 and Y2 of the bearing holes 14 and 18 of the output shaft 52 from the reference plane of the frame 10 are the same.
[0039]
That is, in the cam type beating mechanism 22 and the crank type beating mechanism 24, the axes of the drive shaft (the connection shaft 12 and the cam shaft 46) and the drive shaft (the connection shaft 12 and the crank shaft 90) of the frame 10 are the same. In addition, the locking shafts (the connection shaft 16 and the cam output shaft 52) and the locking shafts (the connection shaft 16 and the crankshaft 92) of the frame 10 are at the same position. Thus, the cam type beating mechanism 22 and the crank type beating mechanism 24 can be selectively attached to and detached from the frame 10.
[0040]
As shown in FIG. 3, the link 94 and the crankpin 100 are formed integrally with the crankshaft 90 to act as an eccentric part of the crankshaft 90, and the link 96 is rotatably supported at one end by the crankpin 100. The link 98 has a pin 102 at one end thereof, and the other end of the link 96 is rotatably supported by the pin 102 and is connected to the link 98. The other end of the link 98 is connected to the crank output shaft 92 so as not to rotate relatively. For this reason, the links 94, 96, and 98 form a four-link mechanism with the frame 10 by using the frame 10 as one link (fixed link).
[0041]
As shown in FIG. 4, the same frame cover 40, bearings 54, 58, 70, 74 and seal member 80 as the cam type beating mechanism 22 shown in FIGS. 1 and 2 are used. Shafts 90 and 92 may be separably connected to shafts 12 and 16 provided on frame 10 by couplings 56 and 56, respectively.
[0042]
As shown in FIGS. 3 and 4, when the crankshaft 90 is rotated in a state where the crank type beating mechanism 24 is assembled to the frame 10, the link 94 is rotated, whereby the links 96 and 98 are bent and stretched. do. As a result, the crank output shaft 92 connected to the link 98 is reciprocally angularly rotated, and the reed 30 is swung to perform a beating motion.
[0043]
In this loom, one of the cam-type beating mechanism 22 and the crank-type beating mechanism 24 can be assembled to the frame 10 for use. For example, when using the crank type beating mechanism 24 instead of the cam type beating mechanism 22, the cam type beating mechanism 22 should be removed from the frame 10 and the crank type beating mechanism 24 should be assembled to the frame 10 instead. Can be.
[0044]
As shown in FIGS. 1 and 2, when the cam type beating mechanism 22 is mounted on the frame 10 including the bearing hole 14 for receiving the drive shaft and the bearing hole 18 for receiving the locking shaft, The replacement procedure of the beating mechanism can be performed as follows.
[0045]
In the motion conversion device of the cam type beating mechanism 22 shown in FIGS. 1 and 2, the drive shaft and the locking shaft constituted by the shafts 12 and 46 and the coupling 56 and the shafts 16 and 52 and the coupling 56 are firstly coupled. 56 and 56 are disengaged from the connecting shafts 12 and 16, respectively, and the connection of the shafts 46 and 52 to the connecting shafts 12 and 16 is released. Then, the bolt 26 that has assembled the frame cover 40 to the frame 10 is removed from the frame 10.
[0046]
As a result, the camshaft 46 is detached from the connection shaft 12 and the bearing 54 on the frame 10 side is detached from the bearing hole 14 of the frame 10 in a state of being fitted into the camshaft 46. Similarly, the cam output shaft 52 is detached from the connection shaft 16, and the bearing 70 of the frame 10 is detached from the bearing hole 18 of the frame 10 in a state of being fitted into the cam output shaft 52.
[0047]
Next, the motion conversion device of the crank type beating mechanism 24 shown in FIGS. 3 and 4 is carried in a state of being assembled to the frame cover 40, and is assembled to the frame 10. At this time, the bearing 54 of the frame 10 is fitted to one end of the crankshaft 90 of the crank type beating mechanism 24, and the bearing 54 is inserted into the bearing hole 14 of the frame 10. One end of the inserted crankshaft 90 is relatively non-rotatably connected to the connecting shaft 12 by a coupling 56, and the shafts 12 and 90 and the coupling 56 constitute a new drive shaft.
[0048]
Similarly, a bearing 70 on the frame 10 side is fitted to one end of the crank output shaft 92 of the crank type beating mechanism 24, and the bearing 70 is inserted into the bearing hole 18 of the frame 10. One end of the inserted crank output shaft 92 is assembled to the connection shaft 16 by a coupling 56 so as not to rotate relatively, and the shafts 16 and 92 and the coupling 56 constitute a new locking shaft.
[0049]
Next, the frame cover 40 is removably and firmly attached to the frame 10 by the plurality of bolts 26.
[0050]
Similarly to the above, the motion conversion device of the cam type beating mechanism 22 can be assembled to the frame 10 instead of the motion conversion device of the crank type beating mechanism 24.
[0051]
As described above, the frame 10 can switch the beating mechanism by selectively mounting the cam-type beating mechanism 22 and the crank-type beating mechanism 24.
[0052]
The drive shaft includes a first drive shaft integrally formed with the driven-side connection shaft 12 and the drive-side cam shaft 46 shown in FIG. 2, and another drive shaft shown in FIG. The connection shaft 12 on the driven side and the crankshaft 90 on the drive side may be a drive shaft integrally formed.
[0053]
The locking shaft is a locking shaft integrally formed with the driven-side connecting shaft 16 and the driving-side cam output shaft 52 shown in FIG. 2, and FIG. 4 is different from the locking shaft connecting shaft 16 in FIG. The connecting shaft 16 on the driven side and the crank output shaft 92 on the driving side may be a locking shaft integrally formed.
[0054]
In any of the above cases, the shafts 12 and 16 and the shafts 46 and 52 may be formed so as not to be disassembled using the coupling 56.
[0055]
In the crank type beating mechanism 24 shown in FIGS. 3 and 4, the number of links is four, but the number of links is not limited to this.
[0056]
Depending on the number of links (for example, six sections) of the crank type beating mechanism 24, a bearing hole for rotatably supporting the swinging link may be newly provided in the frame 10. That is, the frame 10 may be provided with a portion (for example, a mounting hole for supporting a link) necessary for mounting only one of the cam type beating mechanism 22 and the crank type beating mechanism 24.
[0057]
The same or different bearings 54, 58 and 70, 74 of the cam type beating mechanism 22 and the crank type beating mechanism 24 fitted into the bearing holes 14, 18 on the frame 10 side may be used. A thing may be used. In the case of using bearings having different outer diameters, the bearing holes therefor are matched with the bearings with the larger outer diameter, and the bearings with the smaller outer diameter are fitted with the distance members on the outside and fitted into the bearing holes.
[0058]
The bearing hole 14 or 18 is constituted by a bearing case that can be attached to and detached from the frame 10 with bolts or the like, as shown by the alternate long and short dash line in FIG. It may be mounted on the frame 10. At this time, as for the frame cover 40, a frame cover having an inner diameter corresponding to the outer diameter of the bearing is selectively mounted.
[0059]
In the above embodiment, a deep groove ball bearing or a roller bearing is used as the bearings 54, 58 and 70, 74. However, the present invention is not limited to such bearings and the like, and any bearing that has a load capacity against a radial load, such as an angular ball bearing, a double-row angular ball bearing, a self-aligning ball bearing, and the like, may be used. You may. Instead of using one bearing, a plurality of bearings may be used.
[0060]
Looms generally comprise two opposing frames. Therefore, both frames and the frame cover may have the same structure as the frame 10 and the frame cover 40, and the motion converting devices of the beating mechanisms 22, 24 may be selectively assembled to the respective frames and the frame cover. In that case, the motion conversion device of the beating mechanism assembled to one frame may not include the pulley 62.
[0061]
The present invention is not limited to the above embodiments, and can be variously modified without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a right side view in which a cam type beating mechanism is assembled to a frame of a loom according to the present invention.
2 is a cross-sectional view of the motion conversion device of the cam type beating mechanism shown in FIG. 1 as viewed from above the loom, and is a cross-sectional view in which a positional relationship between a locking shaft and a drive shaft is shifted for the sake of explanation.
FIG. 3 is a right side view of the frame of the loom shown in FIG. 1 in which a crank type beating mechanism is assembled.
4 is a cross-sectional view of the motion conversion device of the crank type beating mechanism shown in FIG. 3 as viewed from above the loom, and is a cross-sectional view in which a positional relationship between a locking shaft and a drive shaft is shifted for the sake of explanation.
[Explanation of symbols]
10 Loom frame 12 Connecting shaft (Drive shaft on driven side)
14 Frame bearing holes (first bearing holes)
16 Connecting shaft (locking shaft on driven side)
18 Frame bearing holes (second bearing holes)
22 Cam type beating mechanism (beating device)
24 Crank-type beating mechanism (beating device)
40 frame cover 42, 44 cam 46 of cam type beating mechanism cam shaft of cam type beating mechanism (drive shaft on the driving side)
48, 50 Cam lever 52 of cam type beating mechanism Cam output shaft of cam type beating mechanism (locking shaft on drive side)
54, 70 Frame side bearing 56 Coupling (drive shaft and locking shaft)
90 Crankshaft of crank type beating mechanism (drive shaft on drive side)
92 Output shaft for crank of crank type beating mechanism (locking shaft on drive side)
94,96,98 Link of crank type beating mechanism

Claims (2)

A first bearing hole for receiving the drive shaft, and a second bearing hole for receiving the locking shaft;
A cam-type beating mechanism including a drive shaft having a cam shaft having a cam, and a locking shaft having a first output shaft having a cam lever engaged with the cam;
A crankshaft striking mechanism including a drive shaft having a crankshaft, a locking shaft having a second output shaft, and a plurality of links connecting the crankshaft and the second output shaft.
A loom frame that can be selectively installed. For a loom frame including a first bearing hole for receiving a drive shaft and a second bearing hole for receiving a locking shaft,
A cam-type beating mechanism including a drive shaft having a cam shaft having a cam, and a locking shaft having a first output shaft having a cam lever engaged with the cam;
A drive shaft having a crankshaft, a locking shaft having a second output shaft, and a crank type beating mechanism including a plurality of links connecting the crankshaft and the second output shaft,
A beating method switching method for a loom, in which a beating method is switched by selectively mounting.

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